Ball-bearing.



' No. 818,734. PATENTED APR. 24 1906. I E. BLIN. BALL BEARING.APPLIOATION FILED 0OT.22.1904.

UNITE STATES PATENT onnfron EUGENE BLIN, or AUBERVILLIERS, rnanonasslonon TO LA socni'rit DES FITABLISSEMENTSMALICET ET BL1N,OFAUBERVILLIERS, FRANCE.

BALL-BEARING.

No. crease.

. Specification of Letters Patent.

Patented April 24, 1906.-

Y Application filed October 22. not. Hei-lhl No.229,619.

To In whom it-may concern.-

' Be it known that l, EUGENE BLIN, a. citizen of the Republic of France,residing at Aubervilliers, France, have invented certain new and usefulImprovements in Ball-Bearings, of which the following is aspecification.

This invention relates to a construction of ball-bearings whereby theballs may be introduced into and taken out of annulaiballbearings thatis to say, ball bearings constituted by two concentric rings, eachrovidcd with a groove orti'ack between w iich the balls roll, noauxiliary means being necessary to retain the balls in place.

In the accompanying drawings,,Figure 1 shows a ball-bearing constructedaccording to this invention in front elevation. Fig. 2 is a sectiononthe'line A A of Fig. 1. Fig. 3 is an enlarged section on the line B Bof Fig. 1.

According to this invention, the outer portion of the inner ring a isprovided with a notch or cut-away part b, which starts from one of thesides of the ring and being of less depth than the groove containing theballs does not therefore extend to the bottom of that groove. In thesame way on the inside of the outer ring 0 is made another notch orrecess (1, so that when the two rings are placed concentrically withtheir two notches lacing each other the distance separating the twowalls efof the notches is smaller than on which the balls roll.

Vvhcn a sullicient number of balls has been introduced into the bearingin order to keep the two rings concentric, a ball is introduced betweenthe two notches when they face each other, Fig. 1, but it cannot enterthe ball track unless forced. in. However, owing to the elasticity ofthe material the ball can be driven in, where it remains. All theremaining balls will -be introduced in the same manner. Thus the tworings by themselves constitute a complete ball-bearing andball-retaining device without the use of auxiliary parts. 5 In order toremove a ball, the two notches. b (1 are brought opposite each other,and the ball 0 posite the said notches is forced out from t e other sidebetween the two notches. Thetother balls can be removed in the same 50wayjluntil a sufficient number are removed to allow the bearing to fallapart. The result or this arrangement is that lt'lS not necessary toclose the notches. in order to prevent the balls from escaping. It will,moreover, be 5 5 understood that in tnis construction the travcling pathof the balls does not present any lack of continuity due to jointsbetween various parts. What I claim as my invention, and desire 69 tosecure by-Le'ttcrs Patent, is

A two-partball-bearing and bal1-retaining device comprising two annularconcentric rings, ball-track grooves on the outer circum- I i'erencc oithe inner ring and on the inner cir-, 15 5 cumference of the outer rinand .notchesb 'd in the edges of said rings oi such depth that when theballs are inserted and spring into the ball-race the opening formed bythenotches is slightly less than the diameter of 7'0 I the balls, whichcannot therefore escape, subthe distance between the two track-surfacesstantially a set forth.

' "lnr'testimony whereof I have signed my

